Mark Bomback (Jack The Giant Killer, the Total Recall reboot) has been handed scripting duties for The Wolverine ahead of next year's shoot.
Christopher McQuarrie wrote the current version of the script, with director James Mangold on board to direct.
The plot sees Hugh Jackman's X-Man searching for clues to his past amongst the Japanese criminal underworld, finding love but suffering tragedy along the way.
The shoot is still expected to begin in Tokyo and Vancouver next year, as soon as Jackman finishes shooting Les Miserables. Filming had originally been planned for November 2011 in Vancouver.
Bomback's previous work includes scripts for Live Free Or Die Hard, Unstoppable and the Jackman film Deception.